Standards, specifications and approved products
The ‘Regional Standard for Water Services’ and 'Regional Specification for Water Services' were revised and released in December 2024. Download the latest versions below.
All work on the public water infrastructure that we manage for our council owners should be consistent and meet quality requirements. This applies throughout the service life of stormwater, wastewater and drinking water networks – from the design through to construction, maintenance, renewal, upgrades, and decommissioning.
To support this work, we provide regional minimum standards and specifications, and a list of approved products.
We revise these regularly to include changes in policy and best practice, referenced standards, and legislation. We recommend using the most recent version available.
Please note the resources below are intended for use on projects in the areas managed by Wellington Water. We currently oversee water infrastructure for Greater Wellington Regional Council, Wellington City Council, Porirua City Council, Hutt City Council, Upper Hutt City Council and South Wairarapa District Council.
The regional standard
Technical specifications
Approved products
Using non-standard design or unapproved products
If you're working on water infrastructure in one of the areas managed by Wellington Water, we advise getting agreement early on, if you are:
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planning to use a design solution that does not follow the regional standard and specifications above, or
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recommending using a product that is not included in the ‘approved product register’.
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What you'll need to do depends on the type of project.
Wellington Water Capital Projects
Wellington Water Operations and Maintenance
Land development
How we keep our standards and specifications up-to-date
We acknowledge that some developments refer to older versions of the 'Regional Standard for Water Services' above. We encourage you to meet the requirements in the most recent versions of the standard and specifications above, where possible. This is because the requirements in the most recent versions are more closely aligned with current best practice.
Download the latest version of the 'Regional Standard for Water Services'
Revisions to the regional standard and specifications
We revise and update the 'Regional Standard for Water Services' and the specifications above on this page periodically. This ensures these documents reflect changes in policy, best practice, technology, referenced standards and legislation.
To request a revision to the regional standard and specification, as-built and electrical specifications above, email standards@wellingtonwater.co.nz.
We'll consider your request when we next revise these documents.
Revisions to the 'approved products register'
Wellington Water may review or withdraw the approval of products from the register at any time. We may enter the market periodically to find new or alternative products for the register. This is prioritised to meet our business needs.
Download a copy of the 'approved products register'
We're currently unable to accept applications for new products to be included on the 'approved products register' until further notice. Check this webpage for future updates.
For further information, contact APR@wellingtonwater.co.nz.
More guidance
Safety in design
'Safety in design' means ensuring health and safety risks are managed throughout the lifecycle of structures, plant or while using hazardous substances.
For more information and tools, see the 'Safety in design' section of the 'Health and Safety expectations' page.
Read WorkSafeNZ's guideline: 'Health and safety by design: an introduction'
Guidance on drinking water
The 'Hygiene Code of Practice for Safe and Healthy Drinking Water' provides guidance on:
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good practice for people working on the drinking water supply network
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preventing contamination of drinking water
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delivering safe drinking water to customers.
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Download the 'WQMG_0001 Hygiene Code of Practice for Safe and Healthy Drinking Water'
Pump Stations
The 'Commissioning Guideline for Pump Stations' gives an overview of commissioning and integrating new pump stations into the council network. This includes the process and responsibilities.
View the 'ACM_0001 Commissioning Guideline for Pump Stations'
Designing to enable condition assessment in pressure pipes
The 'Design principles to enable condition assessment of pressure pipes' covers high-level design principles for designing pressure pipelines.
See 'DESP_0002 Design principles to enable condition assessment of pressure pipes'
Managing stormwater
For managing stormwater runoff, see 'SWG_0002 Managing stormwater runoff: The use of approved solutions for hydraulic neutrality'
This provides guidance for developing and assessing proposals for 'approved solutions' for residential hydraulic neutrality for stormwater. 'Approved solutions' are design solutions that we accept for use in the networks we manage also known as 'acceptable solutions'.
The following guide outlines steps for modelling stormwater flooding in small, ungauged urban catchment: 'SWG_0003 Reference guide for design storm hydrology'
Find out about best practice and our requirements for designing stormwater treatment devices:
'DESG_0001 Water sensitive design for stormwater: treatment device design guideline'
Shutdown requests
If you need to shut down a part of the public network, you must get approval from us first.